Herceptin side-effects

[judy]

I have been on Herceptin for 9 months. My MUGA scans have all been very, very strong relative to left ventricle -- currently at 86. However, I have had severe & increasing shortness of breath and, on review, it was discovered that my RIGHT ventricle #s had been decreasing consistently. Now, my RV ejection fraction is 29.

Does anyone have any knowledge of Herceptin causing RIGHT ventricle problems. I have not been able to locate any anecdotal or scientific data relating to this.

I would appreciate any feedback.

Thanks so much

Judy